Damping device for truck-bolsters.



W. G. PRICE.

DAMPING DEVICE FOR TRUCK BOLSTERS.

APPLICATION FILED APILZB, 1913.

Patented Sept. 23, 1913.

2 SHEETS-$111331 1.

WITNESSES.

INVENTOR. Mia MW f dg r coLuMlilA PLANUORAPII C0.,WA5HINUTON, A

W. G. PRICE.

DAMPING DEVICE FOR TRUCK BOLSTERS.

APPLICATION TILED APILZB, 1913.

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"WILLIAM G. PRICE, OF NEIV CASTLE, PENNSlYLVANIA.

DAMPING DEVICE FOR TRUCK-BOLSTERS.

Specification of Letters Patent.

Application filed April 28, 1913.

Patented Sept. 23,1913.

Serial No. 764,158.

To aZZ whom it may concern:

Be it known that I, \VILLIAM G. Pinon, a citizen of the United States, and resident of New Castle, in the county of Lawrence and State of Pennsylvania, have invented a new and useful Improvement in Damping Devices for Truck-Bolsters; and I do hereby declare the following to be a full, clear, and exact description thereof.

My invention relates to railway-trucks, and more especially to a device for damping the swing of the bolster.

It is common practice in railway-car trucks to mount the bolster upon swinging supports so that the bolster is free to swing longitudinally with respect to itself and transversely with respect to the car-frame. By allowing for this swing of the bolster, the bolster is allowed to conform to the change of direction of the car-body when rounding curves, on rough tracks and the like, and as a result better riding of the car is obtained. Unless this longitudinal movement of the bolster, however, is put under restraint, the movement becomes cumulative and the swing of the bolster becomes so great as to occasion the discomfiture of the passengers within the car. The bolster is supported at its ends by springs which permit the bolster to rock lengthwise of itself and which permits the car body to rock or roll when passing at high speed over an uneven track.

It is the object of my present invention to provide a simple and etiicient device by means of which this longitudinal and rocking movement of the bolster may be dampened, and to these ends the invention comprises the novel features hereinafter set forth and claimed.

In the accompanying drawings, Figure 1 is a plan view of a portion of a truck showing my invention applied thereto; Fig. 2 is a longitudinal view partly in section of the transoms and bolster; Fig. 3 is an enlarged plan view of a portion of the bolster, transoms and side frame showing my invention applied thereto; Fig. 4- is a section on the line l4 Fig. 3; Fig. 5 is a section on the line 55 Fig. 3; Fig. 6 is a section on the line 6-6 Fig. 3; and Fig. 7 is a modified form of my invention.

Referring to the drawings the numeral 2 designates the side-frames of a suitable truck which is supported on the wheels 3. The transoms t 1 connect the sideframes 2 and between said transoms'is located a suit able bolster 5 supported in the usual manner upon the springs (3. The pivotally mounted hangers 7 support the springs and bolster in the usual manner to permit the longitudinal swing of same.

A stationary damper-plate 8 is located at each end of the bolster, said plate being socured by bolts 9 to the transom P. The plate 8 is provided with the slots 8 to permit of the adjustment of said plate. This damper-plate 8 has the downwardly extending portion 10 which is adapted to engage the bolster at one side as clearly shown in Fig. 4t. At the opposite side of the bolster are the damper-plates 11 which are shown in the form of channel-iron with the downwardly projecting flange portions 12 and 13, although I do not wish to limit myself to this particular form. The portion 12 is adapted to engage the bolster and the web or horizontal portion of said damper-plate 11 rests upon the wear-plate 1.4. This wearplate 14 is secured to the transom t by means of the bolts 15 which pass through the washers 16 which a re located in the slots 17 in the damper-plate 11. These washers 16 extend above the upper face of the damper-plate 11, and resting on said washers is the check-plate 18 through which the bolts 15 pass, the nuts 19 engaging said bolts. In this manner the check-plate 18 is secured and held against longitudinal movement by the bolts 15 which connect it to the transom and to the wear-plate 14. This construction, however, permits of the lateral movement of the damper-plate 11 due to the slotted portions 17. The damper-plate 11 is held against longitudinal movement by having the up-turned flanges 20 at its ends which engage the rip-turned flanges 21 on the check-plate 18.

A bolt 22 passes through the downward extending portion 13 of the damper-plate 11 and through the downwardly extending portion 28 of the wear-plate 14. A spring 2t is interposed between the dowmvardly extending portion 13 and the recessed washer 25 which is held in place by the nut 26. The spring 24 acts to hold the damper-plate 11 with its downwardly extending portion 12 normally in contact with the bolster, and at the same time tends to push the bolster into contact with the damper-plate 8. When the bolster is forced heavily against the damper plate 11 by the action of the setting of the regulated to give the desired damping effect,

and any wear between the bolster and the damper is taken up by said spring.

W hen my invention is in use the bolster will have a tendency to swing longitudinally due to the movement of the truck in rounding curves or rough tracks and the effect of the damper plates will be to restrain this movement and prevent the cumulative eifect which takes place where no means are em- .ployed to control this swing of the bolster.

The damper-plate 11 is free to move laterally so as to provide for taking up the wear and holding the damper in proper frictional contact with the bolster, while at the same time said damper plate is securely held against longitudinal movement.

The bolster with its longitudinal movement will have a certain amount of vertical movement due to the inclined position of the hangers 7 and this vertical movement will also be restrained by the damper-plates. The bolster will have a certain amount of vertical movement due to the resiliency of its supporting springs and this movement will be restrained by the damper-plates.

The bolster will have a certain amount of end-wise rocking movement due to the spring at one end of the bolster being compressed when the spring at the other end of the bolster is being expanded by the rolling of the car body which frequently takes place when it is moving over uneven trackand this rocking movement will also be restrained by the damper-plates.

When cars are running at high speeds there is frequently a rapid endwise vibratory movement of the car body which is caused by lost motion between the bolster and its transoms and this vibratory movement will be wholly or partially checked by the pressure of the spring 24. V

In Fig. 7 I have shown a modified form of my invention in which the damper-plate 30 has the upwardly turned flange 31 with which the spring 32 engages, saidspring being interposed between said flange and the dished washer 33 on the bolt 34. The bolt 34 is supported by the upturned flange 35 on the plate 36. This plate 36 is secured by th bolts 37 to the transom.

What I claim is: I

1. In a car-truck, the combination with 7 the transoms, of a swing-bolster between the same, a stationary damper plate engaging one side of said bolster, and a spring actuated laterally movable damper-plate engaging the opposite side of said bolster.

2. In a car-truclr, the combination with the transoms, of a swing-bolster between the same, a laterally movable spring actuated flat damper-plate supported by the transom, and a downwardly projecting portion on said damper-plate engaging the side of the bolster. Y

3. In a car-truck, the combination with the transoms, of a swing-bolster between the same, a laterally movable flat damper-plate supported by the transom, a downwardly projecting portion on said damper-plate engaging the side of the bolster, and a spring engaging said plate and supported from the transom.

4. In a car-truck, the combination, with the transoms, of a swing-bolster between the same, a laterally movable damper-plate supported by the transom, a downwardly projecting portion on said damper-plate engaging the side of the bolster, a flange on said damper-plate, a bolt supported from the transom passing through said flange, and a spring interposed between said flange and stop on said bolt.

5. In a car-truck, the combination with the transoms, of a swing-bolster between the 7 same, a laterally movable flat damper-plate supported by the transom, a downwardly projecting portion on said damper-plate engaging the side of the bolster, a spring adapted to hold said damper-plate in con-i tact with the bolster, and a support for. said spring supported from the transom.

6. In a car-truck, thecombination with the transoms, of a swing-bolster between the same, a laterally movable inverted channel damper-plate supported by the transom, one of the flanges of said damper-plate engaging the side of the bolster, and a spring bearing against the other flange of said damperplate and against an abutment supported by said transom.

7. In a car-truck, the combination with the transoms, of a swing-bolster between the same, a laterally movable inverted channel damper-plate supported by said transom one flange of said damper engaging the side of the bolster and bolt passing through the other flange, a support for said bolt carried by the transom, and a spring bolt passing through the other flange of said damper, and a spring interposed between said last named flange and an abutment on said bolt.

9. In a ear-truck, the combination with the transoms, of a swing-bolster between the same, a laterally movable spring-aetuattal flat damper-plate supported by the t 'ansom, and a check plate engaging said damper.

10. In a car-truel the combination with the transoms, of a spring-bolster between same, a laterally movable spring-actuated damper-plate carried by the transom, upwardly turned ends on said damper, and a check-plate secured to the transom engaging the upwardly turned ends of said damper.

11. In a car-truck, the combination with the transoms, of a swing-bolster between the same, a laterally movable damper-plate having slots formed therein, a downwardly projecting portion engaging the side of the bolster, washers located in said slots said Washers extending above the top of said damper, a check-plate resting on said washers, a Wear-plate, bolts passing through said transoms, washers, wear-plate and cheekplate, a spring engaging said damper-plate and interposed between same and an abutment supported by said transom.

12. In a ear-truck, the eon'ibination with the transoms, of a swing-bolster between the same, a laterally movable damper-plate ot ehannel l'orm supported by the transom, one flange of said damper engaging the side of the bolster, a wear-plate, a downwardly extending flange on said \rear- 'ilate, a bolt passing through said flange on said wearplate and the other flange of said damper, and a spring interposed between said last named flange on said damper and an abutment on said bolt.

13. in a car truck, the combination with the transoms, of a winging bolster between the same, a laterally movable spring aetu ated tlat dam er-plate supported by the trai'isom, and a vertical portion on said damper-plate engaging the side of the bolster.

In testimony whereof I the said lVinm'ut ti. Pinon have hereunto set my hand.

WILLIAIvt G. PRICF. l Vitnesses ltomcn'r C. To'r'rlcN, JOHN F. iVILL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

